event.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6
   7 #include <stdlib.h>
   8 #include <X11/keysym.h>
   9 #include <X11/Xatom.h>
  10
  11 #define ButtonMask      (ButtonPressMask | ButtonReleaseMask)
  12 #define MouseMask       (ButtonMask | PointerMotionMask)
  13
  14 /* CUSTOMIZE */
  15
  16 typedef struct {
  17         unsigned long mod;
  18         KeySym keysym;
  19         void (*func)(Arg *arg);
  20         Arg arg;
  21 } Key;
  22
  23 const char *browse[] = { "firefox", NULL };
  24 const char *gimp[] = { "gimp", NULL };
  25 const char *term[] = {
  26         "urxvtc", "-tr", "+sb", "-bg", "black", "-fg", "white", "-cr", "white",
  27         "-fn", "-*-terminus-medium-*-*-*-13-*-*-*-*-*-iso10646-*", NULL
  28 };
  29 const char *xlock[] = { "xlock", NULL };
  30
  31 static Key key[] = {
  32         /* modifier             key             function        arguments */
  33         { ControlMask,          XK_0,           appendtag,      { .i = Tscratch } },
  34         { ControlMask,          XK_1,           appendtag,      { .i = Tdev } },
  35         { ControlMask,          XK_2,           appendtag,      { .i = Twww } },
  36         { ControlMask,          XK_3,           appendtag,      { .i = Twork } },
  37         { MODKEY,               XK_0,           view,           { .i = Tscratch } },
  38         { MODKEY,               XK_1,           view,           { .i = Tdev } },
  39         { MODKEY,               XK_2,           view,           { .i = Twww } },
  40         { MODKEY,               XK_3,           view,           { .i = Twork } },
  41         { MODKEY,               XK_j,           focusnext,      { 0 } },
  42         { MODKEY,               XK_k,           focusprev,      { 0 } },
  43         { MODKEY,               XK_m,           maximize,       { 0 } },
  44         { MODKEY,               XK_space,       dotile,         { 0 } },
  45         { MODKEY,               XK_Return,      zoom,           { 0 } },
  46         { ControlMask|ShiftMask,XK_0,           heretag,        { .i = Tscratch } },
  47         { ControlMask|ShiftMask,XK_1,           heretag,        { .i = Tdev } },
  48         { ControlMask|ShiftMask,XK_2,           heretag,        { .i = Twww } },
  49         { ControlMask|ShiftMask,XK_3,           heretag,        { .i = Twork } },
  50         { MODKEY|ShiftMask,     XK_0,           replacetag,     { .i = Tscratch } },
  51         { MODKEY|ShiftMask,     XK_1,           replacetag,     { .i = Tdev } },
  52         { MODKEY|ShiftMask,     XK_2,           replacetag,     { .i = Twww } },
  53         { MODKEY|ShiftMask,     XK_3,           replacetag,     { .i = Twork } },
  54         { MODKEY|ShiftMask,     XK_c,           killclient,     { 0 } },
  55         { MODKEY|ShiftMask,     XK_g,           spawn,          { .argv = gimp } },
  56         { MODKEY|ShiftMask,     XK_l,           spawn,          { .argv = xlock } },
  57         { MODKEY|ShiftMask,     XK_q,           quit,           { 0 } },
  58         { MODKEY|ShiftMask,     XK_space,       dofloat,        { 0 } },
  59         { MODKEY|ShiftMask,     XK_w,           spawn,          { .argv = browse } },
  60         { MODKEY|ShiftMask,     XK_Return,      spawn,          { .argv = term } },
  61 };
  62
  63 /* static */
  64
  65 static void
  66 movemouse(Client *c)
  67 {
  68         int x1, y1, ocx, ocy, di;
  69         unsigned int dui;
  70         Window dummy;
  71         XEvent ev;
  72
  73         ocx = c->x;
  74         ocy = c->y;
  75         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
  76                         None, cursor[CurMove], CurrentTime) != GrabSuccess)
  77                 return;
  78         XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  79         for(;;) {
  80                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
  81                 switch (ev.type) {
  82                 default: break;
  83                 case Expose:
  84                         handler[Expose](&ev);
  85                         break;
  86                 case MotionNotify:
  87                         XSync(dpy, False);
  88                         c->x = ocx + (ev.xmotion.x - x1);
  89                         c->y = ocy + (ev.xmotion.y - y1);
  90                         resize(c, False, TopLeft);
  91                         break;
  92                 case ButtonRelease:
  93                         XUngrabPointer(dpy, CurrentTime);
  94                         return;
  95                 }
  96         }
  97 }
  98
  99 static void
 100 resizemouse(Client *c)
 101 {
 102         int ocx, ocy;
 103         Corner sticky;
 104         XEvent ev;
 105
 106         ocx = c->x;
 107         ocy = c->y;
 108         if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
 109                                 None, cursor[CurResize], CurrentTime) != GrabSuccess)
 110                 return;
 111         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
 112         for(;;) {
 113                 XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
 114                 switch(ev.type) {
 115                 default: break;
 116                 case Expose:
 117                         handler[Expose](&ev);
 118                         break;
 119                 case MotionNotify:
 120                         XSync(dpy, False);
 121                         c->w = abs(ocx - ev.xmotion.x);
 122                         c->h = abs(ocy - ev.xmotion.y);
 123                         c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
 124                         c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
 125                         if(ocx <= ev.xmotion.x)
 126                                 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
 127                         else
 128                                 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
 129                         resize(c, True, sticky);
 130                         break;
 131                 case ButtonRelease:
 132                         XUngrabPointer(dpy, CurrentTime);
 133                         return;
 134                 }
 135         }
 136 }
 137
 138 static void
 139 buttonpress(XEvent *e)
 140 {
 141         int x;
 142         Arg a;
 143         Client *c;
 144         XButtonPressedEvent *ev = &e->xbutton;
 145
 146         if(barwin == ev->window) {
 147                 switch(ev->button) {
 148                 default:
 149                         x = 0;
 150                         for(a.i = 0; a.i < TLast; a.i++) {
 151                                 x += textw(tags[a.i]);
 152                                 if(ev->x < x) {
 153                                         view(&a);
 154                                         break;
 155                                 }
 156                         }
 157                         break;
 158                 case Button4:
 159                         a.i = (tsel + 1 < TLast) ? tsel + 1 : 0;
 160                         view(&a);
 161                         break;
 162                 case Button5:
 163                         a.i = (tsel - 1 >= 0) ? tsel - 1 : TLast - 1;
 164                         view(&a);
 165                         break;
 166                 }
 167         }
 168         else if((c = getclient(ev->window))) {
 169                 switch(ev->button) {
 170                 default:
 171                         break;
 172                 case Button1:
 173                         if(arrange == dotile && !c->isfloat) {
 174                                 if((ev->state & ControlMask) && (ev->button == Button1))
 175                                         zoom(NULL);
 176                         }
 177                         else {
 178                                 higher(c);
 179                                 movemouse(c);
 180                         }
 181                         break;
 182                 case Button2:
 183                         lower(c);
 184                         break;
 185                 case Button3:
 186                         if(arrange == dofloat || c->isfloat) {
 187                                 higher(c);
 188                                 resizemouse(c);
 189                         }
 190                         break;
 191                 }
 192         }
 193 }
 194
 195 static void
 196 configurerequest(XEvent *e)
 197 {
 198         Client *c;
 199         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 200         XWindowChanges wc;
 201
 202         ev->value_mask &= ~CWSibling;
 203         if((c = getclient(ev->window))) {
 204                 gravitate(c, True);
 205                 if(ev->value_mask & CWX)
 206                         c->x = ev->x;
 207                 if(ev->value_mask & CWY)
 208                         c->y = ev->y;
 209                 if(ev->value_mask & CWWidth)
 210                         c->w = ev->width;
 211                 if(ev->value_mask & CWHeight)
 212                         c->h = ev->height;
 213                 if(ev->value_mask & CWBorderWidth)
 214                         c->border = 1;
 215                 gravitate(c, False);
 216                 resize(c, True, TopLeft);
 217         }
 218
 219         wc.x = ev->x;
 220         wc.y = ev->y;
 221         wc.width = ev->width;
 222         wc.height = ev->height;
 223         wc.border_width = 1;
 224         wc.sibling = None;
 225         wc.stack_mode = Above;
 226         ev->value_mask &= ~CWStackMode;
 227         ev->value_mask |= CWBorderWidth;
 228         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 229         XSync(dpy, False);
 230 }
 231
 232 static void
 233 destroynotify(XEvent *e)
 234 {
 235         Client *c;
 236         XDestroyWindowEvent *ev = &e->xdestroywindow;
 237
 238         if((c = getclient(ev->window)))
 239                 unmanage(c);
 240 }
 241
 242 static void
 243 enternotify(XEvent *e)
 244 {
 245         Client *c;
 246         XCrossingEvent *ev = &e->xcrossing;
 247
 248         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 249                 return;
 250
 251         if((c = getclient(ev->window)))
 252                 focus(c);
 253         else if(ev->window == root)
 254                 issel = True;
 255 }
 256
 257 static void
 258 expose(XEvent *e)
 259 {
 260         Client *c;
 261         XExposeEvent *ev = &e->xexpose;
 262
 263         if(ev->count == 0) {
 264                 if(barwin == ev->window)
 265                         drawstatus();
 266                 else if((c = getctitle(ev->window)))
 267                         drawtitle(c);
 268         }
 269 }
 270
 271 static void
 272 keypress(XEvent *e)
 273 {
 274         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 275         unsigned int i;
 276         KeySym keysym;
 277         XKeyEvent *ev = &e->xkey;
 278
 279         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
 280         for(i = 0; i < len; i++)
 281                 if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
 282                         if(key[i].func)
 283                                 key[i].func(&key[i].arg);
 284                         return;
 285                 }
 286 }
 287
 288 static void
 289 leavenotify(XEvent *e)
 290 {
 291         XCrossingEvent *ev = &e->xcrossing;
 292
 293         if((ev->window == root) && !ev->same_screen)
 294                 issel = True;
 295 }
 296
 297 static void
 298 maprequest(XEvent *e)
 299 {
 300         static XWindowAttributes wa;
 301         XMapRequestEvent *ev = &e->xmaprequest;
 302
 303         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 304                 return;
 305
 306         if(wa.override_redirect) {
 307                 XSelectInput(dpy, ev->window,
 308                                 (StructureNotifyMask | PropertyChangeMask));
 309                 return;
 310         }
 311
 312         if(!getclient(ev->window))
 313                 manage(ev->window, &wa);
 314 }
 315
 316 static void
 317 propertynotify(XEvent *e)
 318 {
 319         Client *c;
 320         Window trans;
 321         XPropertyEvent *ev = &e->xproperty;
 322
 323         if(ev->state == PropertyDelete)
 324                 return; /* ignore */
 325
 326         if((c = getclient(ev->window))) {
 327                 if(ev->atom == wmatom[WMProtocols]) {
 328                         c->proto = getproto(c->win);
 329                         return;
 330                 }
 331                 switch (ev->atom) {
 332                         default: break;
 333                         case XA_WM_TRANSIENT_FOR:
 334                                 XGetTransientForHint(dpy, c->win, &trans);
 335                                 if(!c->isfloat && (c->isfloat = (trans != 0)))
 336                                         arrange(NULL);
 337                                 break;
 338                         case XA_WM_NORMAL_HINTS:
 339                                 setsize(c);
 340                                 break;
 341                 }
 342                 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 343                         settitle(c);
 344                         drawtitle(c);
 345                 }
 346         }
 347 }
 348
 349 static void
 350 unmapnotify(XEvent *e)
 351 {
 352         Client *c;
 353         XUnmapEvent *ev = &e->xunmap;
 354
 355         if((c = getclient(ev->window)))
 356                 unmanage(c);
 357 }
 358
 359 /* extern */
 360
 361 void (*handler[LASTEvent]) (XEvent *) = {
 362         [ButtonPress] = buttonpress,
 363         [ConfigureRequest] = configurerequest,
 364         [DestroyNotify] = destroynotify,
 365         [EnterNotify] = enternotify,
 366         [LeaveNotify] = leavenotify,
 367         [Expose] = expose,
 368         [KeyPress] = keypress,
 369         [MapRequest] = maprequest,
 370         [PropertyNotify] = propertynotify,
 371         [UnmapNotify] = unmapnotify
 372 };
 373
 374 void
 375 grabkeys()
 376 {
 377         static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
 378         unsigned int i;
 379         KeyCode code;
 380
 381         for(i = 0; i < len; i++) {
 382                 code = XKeysymToKeycode(dpy, key[i].keysym);
 383                 XUngrabKey(dpy, code, key[i].mod, root);
 384                 XGrabKey(dpy, code, key[i].mod, root, True,
 385                                 GrabModeAsync, GrabModeAsync);
 386         }
 387 }